CN113376808A

CN113376808A - Image pickup lens assembly

Info

Publication number: CN113376808A
Application number: CN202110716126.9A
Authority: CN
Inventors: 贾远林; 徐武超
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2021-09-10
Anticipated expiration: 2038-11-21
Also published as: CN109212721A; CN113376808B; CN109212721B

Abstract

The present application discloses a photographing lens assembly, sequentially comprising, from an object side to an image side along an optical axis: a first lens having a negative optical power; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens having optical power; and a sixth lens having optical power. At least one of the first lens to the sixth lens has a non-rotationally symmetric aspherical surface; the maximum field angle FOV of the image pickup lens group satisfies FOV > 100 DEG, and the on-axis distance SAG12 from the intersection point of the image side surface of the first lens and the optical axis to the maximum effective semi-aperture vertex of the image side surface of the first lens and the on-axis distance SAG21 from the intersection point of the object side surface of the second lens and the optical axis to the maximum effective semi-aperture vertex of the object side surface of the second lens satisfy 0 < SAG12/SAG21 < 2.0.

Description

Image pickup lens assembly

Divisional application statement

The application is a divisional application of a Chinese patent application with the invention name of a camera lens group and the application number of 201811391047.X, which is filed on 11, 21 and 11 months in 2018.

Technical Field

The present invention relates to a photographing lens group, and more particularly, to a photographing lens group including six lenses.

Background

In recent years, with the rapid development of the field of mobile phone camera shooting and the popularization of chips of large-size and high-pixel Complementary Metal Oxide Semiconductor (CMOS) or photosensitive coupling device (CCD), various mobile phone manufacturers have made strict requirements on the imaging quality of lenses while pursuing the lightness, thinness and miniaturization of lenses. At present, a lens applied to portable electronic products such as mobile phones and the like adopts a six-piece structure, and the lens surface types of the lenses are rotationally symmetrical (axisymmetric) aspheric surfaces. Such rotationally symmetric aspherical surfaces can be regarded as formed by a 360 ° rotation of a curve in the meridian plane around the optical axis, and thus have sufficient degrees of freedom only in the meridian plane and do not correct off-axis aberrations well.

Disclosure of Invention

The present application provides a camera lens assembly applicable to portable electronic products, such as a camera lens assembly suitable for a rear lens of a mobile phone, which can at least solve or partially solve at least one of the above-mentioned disadvantages of the prior art.

The present application provides a photographing lens assembly, in order from an object side to an image side along an optical axis comprising: a first lens having a negative optical power; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens having optical power; and a sixth lens having optical power. At least one of the first lens to the sixth lens has a non-rotationally symmetric aspherical surface; the maximum field angle FOV of the image pickup lens group satisfies FOV > 100 DEG, and the on-axis distance SAG12 from the intersection point of the image side surface of the first lens and the optical axis to the maximum effective semi-aperture vertex of the image side surface of the first lens and the on-axis distance SAG21 from the intersection point of the object side surface of the second lens and the optical axis to the maximum effective semi-aperture vertex of the object side surface of the second lens satisfy 0 < SAG12/SAG21 < 2.0.

In one embodiment, the central thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens can satisfy 1.5 < CT3/ET3 < 3.0.

In one embodiment, the fifth lens may have positive optical power, and the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens may satisfy 1.0 < f3/f5 < 1.5.

In one embodiment, the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R3 of the object-side surface of the second lens satisfy 1.0 < R5/R3 < 2.5.

In one embodiment, the central thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens may satisfy 1.5 < CT5/ET5 < 3.0.

In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy 2.0 < R1/R10 < 3.0.

In one embodiment, a radius of curvature R11 of an object-side surface of the sixth lens and a radius of curvature R12 of an image-side surface of the sixth lens may satisfy 1.5 < R11/R12 < 3.0.

In one embodiment, a separation distance T12 on an optical axis of the first lens and the second lens, a separation distance T23 on an optical axis of the second lens and the third lens, and a separation distance T34 on an optical axis of the third lens and the fourth lens may satisfy 2.0 < (T12+ T23)/T34 < 4.0.

In one embodiment, the central thickness CT1 of the first lens on the optical axis and the separation distance T12 of the first lens and the second lens on the optical axis can satisfy 1.0 ≦ CT1/T12 < 3.0.

In one embodiment, the effective focal length fx of the image lens group in the X-axis direction and the effective focal length fy of the image lens group in the Y-axis direction satisfy 0.5 < fx/fy < 1.5.

In one embodiment, the central thickness CT1 of the first lens element on the optical axis and the central thickness CT2 of the second lens element on the optical axis satisfy 0.5 < CT1/CT2 < 2.0.

In one embodiment, the effective focal length f1 of the first lens and the effective focal length fx of the X-axis direction of the image pickup lens group can satisfy-4.0 < f1/fx ≦ -1.5.

The present application employs a plurality of (e.g., six) lenses, which have at least one advantageous effect of miniaturization, a large wide angle, and high pixels by reasonably distributing the focal power of each lens, the surface shape, the center thickness of each lens, and the on-axis distance between each lens. In addition, by introducing a non-rotationally symmetrical aspheric surface, off-axis meridional aberration and sagittal aberration of the shooting lens group are simultaneously corrected, so that the improvement of image quality is further obtained.

Drawings

Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 shows a schematic configuration diagram of a photographing lens group according to embodiment 1 of the present application;

fig. 2 schematically shows a case where the RMS spot diameter of the imaging lens group of embodiment 1 is in the first quadrant;

fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application;

fig. 4 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 2 is in the first quadrant;

fig. 5 is a schematic view showing the structure of a photographing lens group according to embodiment 3 of the present application;

fig. 6 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 3 is in the first quadrant;

fig. 7 is a schematic view showing the structure of a photographing lens group according to embodiment 4 of the present application;

fig. 8 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 4 is in the first quadrant;

fig. 9 is a schematic view showing the structure of a photographing lens group according to embodiment 5 of the present application;

fig. 10 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 5 is in the first quadrant;

fig. 11 is a schematic view showing the structure of a photographing lens group according to embodiment 6 of the present application;

fig. 12 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 6 is in the first quadrant;

fig. 13 is a schematic view showing the structure of a photographing lens group according to embodiment 7 of the present application;

fig. 14 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 7 is in the first quadrant;

fig. 15 is a schematic view showing the structure of a photographing lens group according to embodiment 8 of the present application;

fig. 16 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 8 is in the first quadrant;

fig. 17 is a schematic view showing the structure of a photographing lens group according to embodiment 9 of the present application;

fig. 18 schematically shows a case where the RMS spot diameter of the photographing lens group of embodiment 9 is in the first quadrant;

fig. 19 is a schematic view showing the structure of a photographing lens group according to embodiment 10 of the present application;

fig. 20 schematically shows a case where the RMS spot diameter of the imaging lens group of embodiment 10 is in the first quadrant.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. In each lens, the surface closest to the subject is referred to as the object side of the lens; in each lens, the surface closest to the imaging plane is referred to as the image side surface of the lens.

In this document, we define a direction parallel to the optical axis as a Z-axis direction, a direction perpendicular to the Z-axis and lying in a meridional plane as a Y-axis direction, and a direction perpendicular to the Z-axis and lying in a sagittal plane as an X-axis direction. Unless otherwise specified, each parameter symbol (e.g., radius of curvature or power, etc.) other than the parameter symbol relating to the field of view herein denotes a characteristic parameter value in the Y-axis direction of the imaging lens group. For example, the conditional expression "R1/R10" represents a ratio of the radius of curvature R1Y in the Y-axis direction of the object-side surface of the first lens to the radius of curvature R10Y in the Y-axis direction of the image-side surface of the fifth lens, unless otherwise specified.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The features, principles, and other aspects of the present application are described in detail below.

The image pickup lens group according to an exemplary embodiment of the present application may include, for example, six lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are arranged in order from the object side to the image side along the optical axis, and an air space is formed between every two adjacent lenses.

In an exemplary embodiment, the first lens may have a negative power; the second lens has positive focal power or negative focal power; the third lens may have a positive optical power; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power or negative focal power; the sixth lens has positive power or negative power. The focal power of the camera lens group is reasonably configured, so that the first lens has negative focal power, and the inclination angle of incident light rays is favorably reduced, thereby effectively sharing the large field of view of an object space and obtaining a larger field angle range; meanwhile, the third lens has positive focal power, which is beneficial to correcting the off-axis aberration of the camera lens group and improving the imaging quality.

Further, the image quality can be further improved by providing the object-side surface and/or the image-side surface of at least one of the first lens to the sixth lens with a non-rotationally symmetric aspherical surface. The non-rotationally symmetrical aspheric surface is a free-form surface, and non-rotationally symmetrical components are added on the basis of the rotationally symmetrical aspheric surface, so that the introduction of the non-rotationally symmetrical aspheric surface into the lens system is beneficial to effectively correcting off-axis meridional aberration and sagittal aberration, and the performance of the optical system is greatly improved.

In an exemplary embodiment, the object side surface of the first lens may be concave.

In an exemplary embodiment, the second lens may have a positive optical power, and the object-side surface thereof may be convex and the image-side surface thereof may be concave.

In an exemplary embodiment, the object-side surface of the third lens element may be convex and the image-side surface may be convex.

In an exemplary embodiment, the fifth lens may have positive optical power, and the image-side surface thereof may be convex.

In an exemplary embodiment, the object-side surface of the sixth lens element may be convex, and the image-side surface may be concave.

In an exemplary embodiment, the image capturing lens assembly of the present application may satisfy the conditional expression 0.5 < fx/fy < 1.5, where fx is an effective focal length of the image capturing lens assembly in the X-axis direction and fy is an effective focal length of the image capturing lens assembly in the Y-axis direction. More specifically, fx and fy further satisfy 0.79. ltoreq. fx/fy. ltoreq.1.19. The focal length ratio in the X-axis direction and the Y-axis direction is reasonably configured, so that the degree of freedom of the free curved surface in two directions is favorably improved, and the correcting effect of the camera lens group on the off-axis aberration is optimized; meanwhile, the aberration and various parameters of the camera lens group can be controlled in a proper range, and finally a high-quality image can be obtained.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 1.5 < CT3/ET3 < 3.0, where CT3 is a central thickness of the third lens on the optical axis and ET3 is an edge thickness of the third lens. More specifically, CT3 and ET3 may further satisfy 1.6 < CT3/ET3 < 2.5, e.g., 1.70 ≦ CT3/ET3 ≦ 2.33. The thickness ratio of the third lens is reasonably configured, and the requirements on the machinability and manufacturability of the lens can be met.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 1.5 < CT5/ET5 < 3.0, where CT5 is a central thickness of the fifth lens on the optical axis and ET5 is an edge thickness of the fifth lens. More specifically, CT5 and ET5 can further satisfy 1.96 ≦ CT5/ET5 ≦ 2.91. The thickness ratio of the fifth lens is reasonably configured, and the requirements on the machinability and manufacturability of the lens can be met.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression 2.0 < (T12+ T23)/T34 < 4.0, where T12 is a separation distance of the first lens and the second lens on the optical axis, T23 is a separation distance of the second lens and the third lens on the optical axis, and T34 is a separation distance of the third lens and the fourth lens on the optical axis. More specifically, T12, T23 and T34 further can satisfy 2.17 ≦ (T12+ T23)/T34 ≦ 3.82. The distance between the lenses on the optical axis is reasonably configured, so that the thickness sensitivity of the camera lens group can be effectively reduced, and the field curvature can be corrected.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 2.0 < R1/R10 < 3.0, where R1 is a radius of curvature of an object side surface of the first lens and R10 is a radius of curvature of an image side surface of the fifth lens. More specifically, R1 and R10 can further satisfy 2.28. ltoreq. R1/R10. ltoreq.2.59. The curvature radius of the lens is reasonably configured, the spherical aberration of the camera lens group can be effectively eliminated, and therefore a high-definition image is obtained.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression 1.0 < R5/R3 < 2.5, where R5 is a radius of curvature of an object side surface of the third lens and R3 is a radius of curvature of an object side surface of the second lens. More specifically, R5 and R3 may further satisfy 1.02. ltoreq. R5/R3. ltoreq.2.27. The curvature radius of the lens is reasonably configured, so that matching of Chief Ray Angles (CRA) of the shooting lens group is favorably ensured, curvature of field of the shooting lens group can be effectively corrected, and the requirement of imaging definition of each view field is met.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 1.5 < R11/R12 < 3.0, where R11 is a radius of curvature of an object side surface of the sixth lens element, and R12 is a radius of curvature of an image side surface of the sixth lens element. More specifically, R11 and R12 can further satisfy 1.76. ltoreq. R11/R12. ltoreq.2.90. The curvature radii of the object side surface and the image side surface of the sixth lens are reasonably configured, so that the assembly tolerance sensitivity of the lens can be effectively reduced, and the product yield is improved.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 1.0 < f3/f5 < 1.5, where f3 is an effective focal length of the third lens and f5 is an effective focal length of the fifth lens. More specifically, f3 and f5 can further satisfy 1.03. ltoreq. f3/f 5. ltoreq.1.45. The focal power of the camera lens group is reasonably configured, the compactness of the camera lens group can be ensured, and the miniaturization requirement is met.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression FOV > 100 °, where FOV is the maximum angle of view of the image pickup lens group. More specifically, the FOV may further satisfy 100 ° < FOV < 130 °, e.g., 103.3 ° ≦ FOV ≦ 119.5 °. The condition that the FOV is more than 100 degrees is met, a large view field range is obtained, and the collection capability of the camera lens group on object information is improved.

In an exemplary embodiment, the image capturing lens assembly of the present application may satisfy the conditional expression 1.0 ≦ CT1/T12 < 3.0, where CT1 is a central thickness of the first lens element on the optical axis, and T12 is a separation distance between the first lens element and the second lens element on the optical axis. More specifically, CT1 and T12 may further satisfy 1.03 ≦ CT1/T12 ≦ 2.86. The central thickness of each lens and the air gap between the lenses are reasonably configured, which is beneficial to meeting the miniaturization requirement of the lens group.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression 0 < SAG12/SAG21 < 2.0, where SAG12 is an on-axis distance from an intersection of an image side surface of the first lens and the optical axis to a maximum effective half-aperture vertex of the image side surface of the first lens, and SAG21 is an on-axis distance from an intersection of an object side surface of the second lens and the optical axis to a maximum effective half-aperture vertex of the object side surface of the second lens. More specifically, SAG12 and SAG21 further can satisfy 0.34 ≦ SAG12/SAG21 ≦ 1.55. The rise of the lens is reasonably distributed, and the super-wide-angle field of view is favorably shared under the condition of meeting the processing capacity.

In an exemplary embodiment, the imaging lens assembly of the present application can satisfy the conditional expression 0.5 < CT1/CT2 < 2.0, where CT1 is the central thickness of the first lens element and CT2 is the central thickness of the second lens element. More specifically, CT1 and CT2 can further satisfy 0.75 ≦ CT1/CT2 ≦ 1.60. The central thickness of each lens is reasonably configured, so that the thickness sensitivity of the lens can be effectively reduced, and the miniaturization requirement of the lens group is met.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression-4.0 < f1/fx ≦ -1.5, where f1 is an effective focal length of the first lens and fx is an effective focal length in the X-axis direction of the image pickup lens group. More specifically, f1 and fx can further satisfy-3.67. ltoreq. f 1/fx. ltoreq.1.46. The focal power of the first lens is reasonably configured, which is beneficial to improving the imaging quality of the lens group.

In an exemplary embodiment, the above-mentioned photographing lens group may further include a diaphragm to improve an imaging quality of the lens. Alternatively, a diaphragm may be disposed between the second lens and the third lens.

Optionally, the above-mentioned image pickup lens group may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element on the image plane.

The image pickup lens group according to the above-described embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the machinability of the lens can be improved, so that the camera lens group is more beneficial to production and processing and can be suitable for portable electronic products. In addition, by introducing a non-rotationally symmetrical aspheric surface, off-axis meridional aberration and sagittal aberration of the shooting lens group are corrected, and further image quality improvement can be obtained.

In the embodiment of the present application, an aspherical mirror surface is often used as the mirror surface of each lens. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Alternatively, at least one of the object-side surface and the image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens may be an aspherical surface. Optionally, an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens may be aspheric.

However, it will be appreciated by those skilled in the art that the number of lenses constituting the imaging lens group can be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the image pickup lens group is not limited to including six lenses. The image pickup lens group may further include other numbers of lenses if necessary.

Specific examples of the image pickup lens group applicable to the above embodiments are further described below with reference to the drawings.

Example 1

A photographing lens group according to embodiment 1 of the present application is described below with reference to fig. 1 and 2. Fig. 1 shows a schematic configuration diagram of an image capturing lens group according to embodiment 1 of the present application.

As shown in fig. 1, an image capturing lens assembly according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Table 1 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image pickup lens group of embodiment 1, wherein the units of the radius of curvature X, the radius of curvature Y, and the thickness are all millimeters (mm).

TABLE 1

As can be seen from table 1, the object-side surface and the image-side surface of any one of the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and the image-side surface S2 of the first lens E1 are aspheric. In the present embodiment, the profile x of each aspheric lens can be defined using, but not limited to, the following aspheric formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S2, S3-S12 in example 1₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S2

9.3363E-01

-7.6799E-01

-1.3121E+00

7.3286E+00

-1.4715E+01

1.3286E+01

-4.4795E+00

0.0000E+00

S3

1.3714E-01

-5.0499E-01

1.2691E+00

-2.4797E+00

1.9326E+00

1.5474E-01

-1.9000E-01

0.0000E+00

S4

1.5420E-01

-1.7709E+00

2.3942E+01

-1.5588E+02

5.7170E+02

-1.0975E+03

8.7684E+02

0.0000E+00

S5

3.3495E-02

-2.4343E-01

3.2970E+00

-2.8404E+01

1.3799E+02

-4.1254E+02

7.3801E+02

-7.0772E+02

2.7923E+02

S6

-4.9708E-01

9.2764E-01

-4.4431E+00

1.5340E+01

-4.2431E+01

9.2869E+01

-1.3624E+02

1.0374E+02

-2.2128E+01

S7

-9.9400E-01

1.7541E+00

-3.7867E+00

4.5668E+00

1.0819E+01

-6.1656E+01

1.2323E+02

-1.1233E+02

3.8134E+01

S8

-5.0813E-01

8.8131E-01

-3.3564E-01

-5.2266E+00

2.3132E+01

-5.0075E+01

6.0360E+01

-3.8275E+01

9.9699E+00

S9

-1.7402E-01

1.0170E+00

-5.1838E+00

1.7390E+01

-3.5747E+01

4.5276E+01

-3.4639E+01

1.4704E+01

-2.6619E+00

S10

-2.1878E-01

7.7532E-01

-1.1122E+00

5.6283E-01

1.3193E+00

-2.8207E+00

2.4044E+00

-1.0016E+00

1.6636E-01

S11

-7.4721E-01

1.5497E+00

-4.2065E+00

8.8319E+00

-1.2257E+01

1.0741E+01

-5.7219E+00

1.6927E+00

-2.1315E-01

S12

-2.5179E-01

2.4618E-01

-1.9379E-01

1.0656E-01

-3.9943E-02

9.8250E-03

-1.4966E-03

1.2641E-04

-4.4864E-06

TABLE 2

As can also be seen from table 1, the object side surface S1 of the first lens E1 is a non-rotationally symmetric aspheric surface (i.e., AAS surface), and the surface type of the non-rotationally symmetric aspheric surface can be defined using, but not limited to, the following non-rotationally symmetric aspheric surface formula:

wherein Z is a rise of a plane parallel to the Z-axis direction; CUX and CUY are curvatures (1/curvature radius) of the apex of the X, Y axial surface; KX and KY are respectively cone coefficients in the X, Y axial direction; AR, BR, CR and DR are respectively 4-order, 6-order, 8-order and 10-order coefficients in the aspheric surface rotational symmetry component; AP, BP, CP, DP are 4 th, 6 th, 8 th, 10 th order coefficient in the aspheric surface non-rotation symmetrical component respectively. Table 3 below gives the AR, BR, CR, DR coefficients and the AP, BP, CP, DP coefficients that can be used for the non-rotationally symmetric aspherical surface S1 in example 1.

AAS noodle

AR

BR

CR

DR

AP

BP

CP

DP

S1

4.1794E-01

-4.1319E-01

2.3805E-01

-5.8843E-02

-1.2929E-02

-3.0706E-03

2.0370E-03

2.0533E-03

TABLE 3

Table 4 gives the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image capturing lens group in the X-axis direction, the effective focal length fy of the image capturing lens group in the Y-axis direction, the total optical length TTL of the image capturing lens group (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15), half ImgH of the diagonal length of the effective pixel area on the imaging surface S15, and the maximum half field angle semi-FOV in embodiment 1.

f1(mm)	-3.66	fx(mm)	2.24
				f2(mm)	8.05	fy(mm)	2.29
f3(mm)	2.60	TTL(mm)	5.05
				f4(mm)	-3.59	ImgH(mm)	3.02
f5(mm)	1.96	semi-FOV(°)	55.6
				f6(mm)	-4.62

TABLE 4

Fig. 2 shows the size of the RMS spot diameter of the imaging lens group of embodiment 1 at different image height positions in the first quadrant. As can be seen from fig. 2, the imaging lens assembly according to embodiment 1 can achieve good imaging quality.

Example 2

A photographing lens group according to embodiment 2 of the present application is described below with reference to fig. 3 and 4. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application.

As shown in fig. 3, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Table 5 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image pickup lens group of embodiment 2, wherein the units of the radius of curvature X, the radius of curvature Y, and the thickness are all millimeters (mm).

TABLE 5

As can be seen from table 5, in embodiment 2, the object-side surface and the image-side surface of any one of the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and the object-side surface S1 of the first lens E1 are aspheric; the image-side surface S2 of the first lens element E1 is an aspherical surface having a non-rotational symmetry.

Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 7 shows the rotationally symmetric component that can be used for the rotationally asymmetric aspheric surface S2 in embodiment 2 and the higher-order coefficients of the rotationally asymmetric component, wherein the rotationally asymmetric aspheric surface shape can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.7521E-01

-1.8855E-01

-8.8045E-03

1.5545E-01

-1.4362E-01

5.8649E-02

-9.6009E-03

0.0000E+00

S3

4.6906E-02

3.2621E-02

-3.8810E-01

3.5483E-01

-4.2660E-02

9.8460E-02

-7.2216E-02

0.0000E+00

S4

9.0840E-02

-6.0102E-01

8.4446E+00

-4.9139E+01

1.5795E+02

-2.6324E+02

1.8429E+02

0.0000E+00

S5

2.6081E-02

-2.1410E-01

5.4226E+00

-6.6031E+01

4.0767E+02

-1.4245E+03

2.8553E+03

-3.0662E+03

1.3702E+03

S6

-3.2598E-01

-1.2960E-02

4.4145E+00

-3.8575E+01

1.6974E+02

-4.3901E+02

6.7304E+02

-5.6593E+02

2.0152E+02

S7

-7.2605E-01

1.1709E+00

-1.2791E+00

-5.5810E+00

3.3586E+01

-8.2760E+01

1.1256E+02

-8.0906E+01

2.3941E+01

S8

-3.2454E-01

-8.9040E-02

3.6564E+00

-1.5219E+01

3.5321E+01

-5.0642E+01

4.4373E+01

-2.1808E+01

4.6324E+00

S9

-7.1669E-02

-4.2226E-02

5.4049E-01

-1.1389E+00

1.1161E+00

-3.0528E-01

-3.8525E-01

3.5203E-01

-8.7036E-02

S10

-1.9240E-01

8.0303E-01

-1.9160E+00

3.5907E+00

-4.8112E+00

4.3603E+00

-2.4771E+00

7.8754E-01

-1.0660E-01

S11

-5.5376E-01

9.0813E-01

-1.7878E+00

2.8572E+00

-3.2499E+00

2.4290E+00

-1.1221E+00

2.8916E-01

-3.1645E-02

S12

-5.5555E-01

8.3055E-01

-8.6412E-01

-1.1260E+00

9.7566E+00

-3.0562E+01

5.5100E+01

-5.2406E+01

1.7482E+01

TABLE 6

AAS noodle

AR

BR

CR

DR

AP

BP

CP

DP

S2

7.1504E-01

-6.0965E-01

2.7836E-01

-1.3262E-01

8.2975E-03

1.8607E-02

-7.6166E-03

-3.5475E-02

TABLE 7

Table 8 shows the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in embodiment 2.

f1(mm)	-4.02	fx(mm)	2.38
				f2(mm)	7.58	fy(mm)	2.27
f3(mm)	2.79	TTL(mm)	5.22
				f4(mm)	-4.26	ImgH(mm)	3.02
f5(mm)	2.10	semi-FOV(°)	55.9
				f6(mm)	2.10

TABLE 8

Fig. 4 shows the size of the RMS spot diameter of the imaging lens group of embodiment 2 at different image height positions in the first quadrant. As can be seen from fig. 4, the imaging lens assembly according to embodiment 2 can achieve good imaging quality.

Example 3

A photographing lens group according to embodiment 3 of the present application is described below with reference to fig. 5 and 6. Fig. 5 shows a schematic structural view of a photographing lens group according to embodiment 3 of the present application.

As shown in fig. 5, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Table 9 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image pickup lens group of embodiment 3, wherein the units of the radius of curvature X, the radius of curvature Y, and the thickness are all millimeters (mm).

TABLE 9

As can be seen from table 9, in embodiment 3, the object-side surface and the image-side surface of any one of the first lens E1, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and the image-side surface S4 of the second lens E2 are aspheric; the object-side surface S3 of the second lens element E2 is an aspheric surface having a non-rotational symmetry.

Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in embodiment 3, wherein each aspherical mirror surface type can be defined by the formula (1) given in embodiment 1 above. Table 11 shows the rotationally symmetric component that can be used for the rotationally asymmetric aspheric surface S3 in embodiment 3 and the higher-order coefficients of the rotationally asymmetric component, in which the rotationally asymmetric aspheric surface shape can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.8405E-01

-3.4683E-01

4.3473E-01

-3.9189E-01

1.9055E-01

-3.7430E-02

1.7509E-04

0.0000E+00

S2

6.1408E-01

8.8954E-02

-4.5105E+00

1.6858E+01

-3.0422E+01

2.6666E+01

-9.0991E+00

0.0000E+00

S4

4.4646E-02

8.2998E-01

-6.7849E+00

3.6960E+01

-1.1807E+02

2.0205E+02

-1.3815E+02

0.0000E+00

S5

3.9172E-02

-1.1282E+00

1.6460E+01

-1.3218E+02

6.2856E+02

-1.8386E+03

3.2627E+03

-3.2243E+03

1.3608E+03

S6

-1.7859E-01

-1.8932E+00

1.9714E+01

-1.0922E+02

3.6743E+02

-7.7503E+02

9.9981E+02

-7.1992E+02

2.2187E+02

S7

-5.9497E-01

1.1001E+00

-6.0977E+00

3.9261E+01

-1.5060E+02

3.3007E+02

-4.1371E+02

2.7781E+02

-7.7714E+01

S8

-2.4820E-01

-1.1646E-01

3.0100E+00

-1.3462E+01

3.5165E+01

-5.6800E+01

5.5085E+01

-2.9224E+01

6.5029E+00

S9

-1.8496E-01

1.4099E+00

-6.9286E+00

1.9442E+01

-3.2672E+01

3.3776E+01

-2.1098E+01

7.2952E+00

-1.0680E+00

S10

-1.0861E-01

1.7837E-01

6.1611E-01

-2.5973E+00

4.5066E+00

-4.3358E+00

2.4135E+00

-7.3007E-01

9.3036E-02

S11

-3.1034E-01

-6.5134E-01

2.8975E+00

-5.1626E+00

5.2273E+00

-3.2161E+00

1.1875E+00

-2.4128E-01

2.0688E-02

S12

-2.1978E-01

2.0869E-01

-1.4331E-01

7.0837E-02

-2.5049E-02

5.9229E-03

-8.6144E-04

6.8238E-05

-2.2218E-06

Watch 10

AAS noodle

AR

BR

CR

DR

AP

BP

CP

DP

S3

7.4697E-02

5.2103E-02

-5.2396E-01

4.9438E-01

3.6645E-01

-2.0292E-01

1.3937E-01

1.0227E-01

TABLE 11

Table 12 gives the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in embodiment 3.

f1(mm)	-4.18	fx(mm)	2.13
				f2(mm)	7.90	fy(mm)	2.29
f3(mm)	3.04	TTL(mm)	5.14
				f4(mm)	-4.91	ImgH(mm)	3.02
f5(mm)	2.16	semi-FOV(°)	59.8
				f6(mm)	-4.04

TABLE 12

Fig. 6 shows the size of the RMS spot diameter of the imaging lens group of embodiment 3 at different image height positions in the first quadrant. As can be seen from fig. 6, the imaging lens assembly according to embodiment 3 can achieve good imaging quality.

Example 4

A photographing lens group according to embodiment 4 of the present application is described below with reference to fig. 7 and 8. Fig. 7 shows a schematic configuration diagram of a photographing lens group according to embodiment 4 of the present application.

As shown in fig. 7, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Table 13 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image pickup lens group of embodiment 4, wherein the units of the radius of curvature X, the radius of curvature Y, and the thickness are all millimeters (mm).

Watch 13

As can be seen from table 13, in example 4, the object-side surface and the image-side surface of any one of the first lens E1, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and the object-side surface S3 of the second lens E2 are aspheric; the image-side surface S4 of the second lens element E2 is an aspherical surface having a non-rotational symmetry.

Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 15 shows the rotationally symmetric component that can be used for the rotationally asymmetric aspheric surface S4 in embodiment 4 and the higher-order coefficients of the rotationally asymmetric component, in which the rotationally asymmetric aspheric surface shape can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.9706E-01

-3.2081E-01

2.7618E-01

-1.5932E-01

5.4085E-02

-1.0211E-02

8.9649E-04

0.0000E+00

S2

7.0902E-01

-8.2106E-01

4.5873E-01

1.2499E+00

-3.3482E+00

2.8004E+00

-7.9197E-01

0.0000E+00

S3

9.7342E-02

-3.4893E-01

5.7118E-01

4.6803E-02

-2.3589E+00

3.6260E+00

-1.6517E+00

0.0000E+00

S5

-1.0004E-02

6.9806E-01

-1.0948E+01

8.8390E+01

-4.2685E+02

1.2642E+03

-2.2390E+03

2.1697E+03

-8.8308E+02

S6

-2.6924E-01

-7.6928E-01

1.0922E+01

-6.7115E+01

2.3756E+02

-5.2158E+02

7.0449E+02

-5.3530E+02

1.7471E+02

S7

-6.4530E-01

1.3311E+00

-4.1954E+00

1.5488E+01

-5.2943E+01

1.1968E+02

-1.5538E+02

1.0554E+02

-2.9076E+01

S8

-2.7893E-01

-2.5714E-01

4.7341E+00

-1.9611E+01

4.6490E+01

-6.9275E+01

6.4155E+01

-3.3723E+01

7.6800E+00

S9

-9.5112E-02

5.0385E-01

-2.8851E+00

9.4538E+00

-1.7988E+01

2.0791E+01

-1.4476E+01

5.5875E+00

-9.1795E-01

S10

-2.5692E-01

1.6240E+00

-5.4302E+00

1.1285E+01

-1.4678E+01

1.2061E+01

-6.0761E+00

1.7109E+00

-2.0606E-01

S11

-4.5320E-01

5.4968E-01

-5.7507E-01

2.7923E-01

5.5599E-02

-1.3976E-01

6.7182E-02

-1.3345E-02

8.9415E-04

S12

-1.9525E-01

2.1241E-01

-1.8259E-01

1.0786E-01

-4.2783E-02

1.1054E-02

-1.7725E-03

1.5953E-04

-6.1484E-06

TABLE 14

AAS noodle

AR

BR

CR

DR

AP

BP

CP

DP

S4

6.7220E-02

3.4641E-01

-1.2253E+00

2.8315E+00

-4.3143E-01

6.9101E-02

-6.7126E-02

-9.0575E-03

Watch 15

Table 16 gives the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in embodiment 4.

TABLE 16

Fig. 8 shows the size of the RMS spot diameter of the imaging lens group of embodiment 4 at different image height positions in the first quadrant. As can be seen from fig. 8, the imaging lens assembly according to embodiment 4 can achieve good imaging quality.

Example 5

A photographing lens group according to embodiment 5 of the present application is described below with reference to fig. 9 and 10. Fig. 9 shows a schematic configuration diagram of a photographing lens group according to embodiment 5 of the present application.

As shown in fig. 9, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

Table 17 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image pickup lens group of example 5, wherein the units of radius of curvature X, radius of curvature Y, and thickness are all millimeters (mm).

TABLE 17

As can be seen from table 17, in example 5, the object-side surface and the image-side surface of any one of the first lens E1, the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 are aspheric; the object-side surface S5 and the image-side surface S6 of the third lens E3 are aspheric.

Table 18 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 19 shows the rotationally symmetric components and the higher-order coefficients of the rotationally asymmetric components that can be used for the rotationally asymmetric aspherical surfaces S5 and S6 in embodiment 5, wherein the non-rotationally symmetric aspherical surface types can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

3.3475E-01

-2.9118E-01

1.6137E-01

-4.0968E-02

0.0000E+00

S2

9.6519E-01

-1.7718E+00

3.9819E+00

-7.6972E+00

9.6964E+00

-7.3880E+00

2.4803E+00

0.0000E+00

S3

1.2102E-01

-4.5990E-01

9.5976E-01

-8.8869E-01

-2.1582E+00

5.8886E+00

-3.7104E+00

0.0000E+00

S4

9.1481E-02

-3.6912E-01

6.7191E+00

-4.0423E+01

1.4140E+02

-2.6293E+02

2.1775E+02

0.0000E+00

S7

-9.6908E-01

2.4219E+00

-9.3925E+00

3.1974E+01

-6.9055E+01

6.6313E+01

2.7446E+01

-1.0141E+02

5.3741E+01

S8

-4.1074E-01

-6.9587E-02

6.1149E+00

-3.1566E+01

8.8695E+01

-1.5019E+02

1.5123E+02

-8.2868E+01

1.8974E+01

S9

-1.1886E-01

2.3468E-01

-2.0722E-01

-3.1542E-01

1.9674E+00

-3.9651E+00

3.9791E+00

-1.9956E+00

3.9661E-01

S10

-2.7229E-01

1.3470E+00

-3.5258E+00

6.4291E+00

-7.7617E+00

6.1949E+00

-3.1278E+00

8.9971E-01

-1.1218E-01

S11

-7.8744E-01

2.0106E+00

-5.7569E+00

1.1761E+01

-1.5863E+01

1.3691E+01

-7.2513E+00

2.1400E+00

-2.6859E-01

S12

-1.7695E-01

9.3319E-02

-1.1879E-02

-2.9424E-02

2.3445E-02

-8.1101E-03

1.4239E-03

-1.1627E-04

2.8987E-06

Watch 18

AAS noodle

AR

BR

CR

DR

AP

BP

CP

DP

S5

4.4464E-02

-4.1952E-02

-2.8175E-01

3.7127E-01

2.2558E-01

1.0541E-01

-7.3008E-03

1.7969E-02

S6

-4.6242E-01

6.2861E-01

-1.5381E+00

1.3279E+00

2.2323E-02

1.4273E-02

-4.8986E-03

8.8936E-03

Watch 19

Table 20 shows the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in example 5.

f1(mm)	-3.84	fx(mm)	2.13
				f2(mm)	7.02	fy(mm)	2.24
f3(mm)	2.73	TTL(mm)	5.00
				f4(mm)	-3.82	ImgH(mm)	3.03
f5(mm)	2.01	semi-FOV(°)	53.2
				f6(mm)	-4.72

Watch 20

Fig. 10 shows the size of the RMS spot diameter of the imaging lens group of embodiment 5 at different image height positions in the first quadrant. As can be seen from fig. 10, the imaging lens group according to embodiment 5 can achieve good imaging quality.

Example 6

A photographing lens group according to embodiment 6 of the present application is described below with reference to fig. 11 and 12. Fig. 11 shows a schematic configuration diagram of a photographing lens group according to embodiment 6 of the present application.

As shown in fig. 11, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

Table 21 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image pickup lens group of example 6, wherein the units of radius of curvature X, radius of curvature Y, and thickness are all millimeters (mm).

TABLE 21

As can be seen from table 21, in example 6, the object-side surface and the image-side surface of any one of the first lens E1, the second lens E2, the third lens E3, the fifth lens E5, and the sixth lens E6 are aspheric; the object-side surface S7 and the image-side surface S8 of the fourth lens element E4 are aspheric.

Table 22 shows high-order term coefficients that can be used for each aspherical mirror surface in embodiment 6, wherein each aspherical mirror surface type can be defined by formula (1) given in embodiment 1 above. Table 23 shows the rotationally symmetric components that can be used for the rotationally asymmetric aspherical surfaces S7 and S8 in embodiment 6, and the higher-order coefficients of the rotationally asymmetric components, wherein the non-rotationally symmetric aspherical surface shape can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

3.4706E-01

-3.7450E-01

3.5462E-01

-2.8150E-01

1.6964E-01

-6.5565E-02

1.1297E-02

0.0000E+00

S2

9.7580E-01

-1.7117E+00

3.2237E+00

-4.6214E+00

3.8010E+00

-2.1950E+00

8.3475E-01

0.0000E+00

S3

1.9403E-01

-1.3342E+00

6.0927E+00

-1.8692E+01

3.4112E+01

-3.3738E+01

1.4043E+01

0.0000E+00

S4

3.7385E-02

1.0023E+00

-8.5533E+00

5.1988E+01

-1.6594E+02

2.7802E+02

-1.7230E+02

0.0000E+00

S5

8.9165E-02

-2.0544E+00

3.2075E+01

-2.9709E+02

1.6859E+03

-5.9680E+03

1.2856E+04

-1.5440E+04

7.9567E+03

S6

-3.2685E-01

-2.5522E+00

3.7301E+01

-2.7342E+02

1.1976E+03

-3.2664E+03

5.4407E+03

-5.0740E+03

2.0356E+03

S9

-1.6576E-01

8.3123E-01

-3.3210E+00

9.9519E+00

-1.9769E+01

2.4722E+01

-1.8679E+01

7.7988E+00

-1.3843E+00

S10

-1.6139E-01

1.9990E-01

1.5562E+00

-6.3510E+00

1.2099E+01

-1.3260E+01

8.5219E+00

-2.9792E+00

4.3641E-01

S11

-6.9869E-01

1.0081E+00

-1.2474E+00

1.1946E+00

-1.1702E+00

1.1070E+00

-7.3442E-01

2.6811E-01

-3.9731E-02

S12

-1.7801E-01

1.5752E-01

-8.8042E-02

1.5154E-02

9.4692E-03

-6.2531E-03

1.5608E-03

-1.8633E-04

8.8170E-06

TABLE 22

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S7

-9.0392E-01

1.4283E+00

-2.2231E+00

1.8703E+00

1.8140E-03

5.6692E-03

1.5559E-03

1.6003E-03

S8

-4.6772E-01

8.4517E-01

-9.3023E-01

4.7308E-01

3.9330E-02

6.2539E-03

-6.2983E-03

-7.5213E-03

TABLE 23

Table 24 gives the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in example 6.

f1(mm)	-3.78	fx(mm)	2.41
				f2(mm)	6.38	fy(mm)	2.14
f3(mm)	2.73	TTL(mm)	4.93
				f4(mm)	-4.24	ImgH(mm)	3.02
f5(mm)	2.06	semi-FOV(°)	56.2
				f6(mm)	-3.79

Watch 24

Fig. 12 shows the size of the RMS spot diameter of the imaging lens group of embodiment 6 at different image height positions in the first quadrant. As can be seen from fig. 12, the imaging lens group according to embodiment 6 can achieve good imaging quality.

Example 7

A photographing lens group according to embodiment 7 of the present application is described below with reference to fig. 13 and 14. Fig. 13 shows a schematic configuration diagram of an image capturing lens group according to embodiment 7 of the present application.

As shown in fig. 13, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

Table 25 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the imaging lens group of example 7, wherein the units of radius of curvature X, radius of curvature Y, and thickness are all millimeters (mm).

TABLE 25

As can be seen from table 25, in example 7, the object-side surface and the image-side surface of any one of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, and the sixth lens E6, and the image-side surface S10 of the fifth lens E5 are aspheric; the object-side surface S9 of the fifth lens element E5 is an aspherical surface having a non-rotational symmetry.

Table 26 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 27 shows the rotationally symmetric component that can be used for the rotationally asymmetric aspheric surface S9 in embodiment 7 and the higher-order coefficients of the rotationally asymmetric component, in which the rotationally asymmetric aspheric surface shape can be defined by the formula (2) given in embodiment 1 above.

Watch 26

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S9

-1.3088E-01

1.3130E-01

-4.3903E-02

-2.7308E-03

-5.8332E-02

-3.9047E-02

-4.3713E-02

1.7093E-01

Watch 27

Table 28 gives the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in example 7.

f1(mm)	-3.53	fx(mm)	2.41
				f2(mm)	6.42	fy(mm)	2.20
f3(mm)	2.54	TTL(mm)	4.94
				f4(mm)	-2.89	ImgH(mm)	3.03
f5(mm)	1.75	semi-FOV(°)	53.5
				f6(mm)	-3.14

Watch 28

Fig. 14 shows the size of the RMS spot diameter of the imaging lens group of embodiment 7 at different image height positions in the first quadrant. As can be seen from fig. 14, the imaging lens group according to embodiment 7 can achieve good imaging quality.

Example 8

A photographing lens group according to embodiment 8 of the present application is described below with reference to fig. 15 and 16. Fig. 15 shows a schematic structural view of a photographing lens group according to embodiment 8 of the present application.

As shown in fig. 15, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

Table 29 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image pickup lens group of example 8, wherein the units of radius of curvature X, radius of curvature Y, and thickness are all millimeters (mm).

Watch 29

As can be seen from table 29, in example 8, the object-side surface and the image-side surface of any one of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, and the sixth lens E6, and the object-side surface S9 of the fifth lens E5 are aspheric; the image-side surface S10 of the fifth lens element E5 is an aspherical surface having a non-rotational symmetry.

Table 30 shows high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 31 shows the rotationally symmetric component that can be used for the rotationally asymmetric aspheric surface S10 in embodiment 8 and the higher-order coefficients of the rotationally asymmetric component, in which the rotationally asymmetric aspheric surface shape can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

3.4929E-01

-3.6069E-01

3.1383E-01

-2.2839E-01

1.3371E-01

-5.3085E-02

9.2873E-03

0.0000E+00

S2

9.7460E-01

-1.8507E+00

4.4088E+00

-9.3982E+00

1.2834E+01

-1.0003E+01

3.3323E+00

0.0000E+00

S3

1.8114E-01

-1.0421E+00

4.4801E+00

-1.4128E+01

2.6156E+01

-2.5322E+01

1.0057E+01

0.0000E+00

S4

4.4179E-02

8.5156E-01

-5.0193E+00

1.9626E+01

-2.9403E+01

-2.9726E+00

5.1444E+01

0.0000E+00

S5

7.7074E-02

-1.1734E+00

1.7444E+01

-1.6311E+02

9.3670E+02

-3.3539E+03

7.2650E+03

-8.6960E+03

4.4173E+03

S6

-5.5534E-01

3.2035E+00

-2.4893E+01

1.3238E+02

-4.7910E+02

1.1400E+03

-1.6955E+03

1.4196E+03

-5.0541E+02

S7

-8.4820E-01

7.2032E-01

1.0050E+01

-8.2272E+01

3.1354E+02

-6.9531E+02

9.0889E+02

-6.4237E+02

1.8816E+02

S8

-3.5334E-01

-5.0861E-02

3.5029E+00

-1.2819E+01

2.4502E+01

-2.7630E+01

1.8196E+01

-6.3172E+00

8.9384E-01

S9

7.9283E-02

-9.7810E-01

3.3618E+00

-6.0721E+00

6.3356E+00

-3.6224E+00

8.0447E-01

1.4902E-01

-7.7068E-02

S11

-5.8702E-01

1.0662E+00

-3.2115E+00

7.0318E+00

-9.3890E+00

7.6341E+00

-3.7191E+00

9.9750E-01

-1.1296E-01

S12

-1.2211E-01

-1.6641E-01

3.5414E-01

-3.0601E-01

1.4774E-01

-4.2482E-02

7.1342E-03

-6.3065E-04

2.1598E-05

Watch 30

Watch 31

Table 32 gives the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in embodiment 8.

f1(mm)	-3.71	fx(mm)	1.97
				f2(mm)	7.03	fy(mm)	2.14
f3(mm)	2.52	TTL(mm)	4.95
				f4(mm)	-3.54	ImgH(mm)	3.02
f5(mm)	2.09	semi-FOV(°)	53.6
				f6(mm)	-5.41

Watch 32

Fig. 16 shows the size of the RMS spot diameter of the imaging lens group of embodiment 8 at different image height positions in the first quadrant. As can be seen from fig. 16, the imaging lens group according to embodiment 8 can achieve good imaging quality.

Example 9

A photographing lens group according to embodiment 9 of the present application is described below with reference to fig. 17 and 18. Fig. 17 shows a schematic configuration diagram of an image capturing lens group according to embodiment 9 of the present application.

As shown in fig. 17, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

Table 33 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the image capturing lens group of example 9, wherein the units of radius of curvature X, radius of curvature Y, and thickness are millimeters (mm).

Watch 33

As can be seen from table 33, in example 9, the object-side surface and the image-side surface of any one of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, and the fifth lens E5, and the image-side surface S12 of the sixth lens E6 are aspheric; the object-side surface S11 of the sixth lens element E6 is an aspherical surface having a non-rotational symmetry.

Table 34 shows high-order term coefficients that can be used for each aspherical mirror surface in example 9, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 35 shows the rotationally symmetric component that can be used for the rotationally asymmetric aspheric surface S11 in embodiment 9 and the higher-order coefficients of the rotationally asymmetric component, in which the rotationally asymmetric aspheric surface shape can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.0864E-01

-1.7817E-01

1.5064E-01

-1.2499E-01

7.8078E-02

-2.8873E-02

4.5382E-03

0.0000E+00

S2

5.4618E-01

-6.5760E-01

8.8986E-01

-1.0597E+00

8.8996E-01

-6.1941E-01

2.3665E-01

0.0000E+00

S3

6.2320E-02

-3.3429E-01

1.1509E+00

-2.3922E+00

2.4651E+00

-1.1636E+00

1.9801E-01

0.0000E+00

S4

-3.1364E-03

1.0146E+00

-7.5077E+00

3.7694E+01

-1.0435E+02

1.4800E+02

-7.9758E+01

0.0000E+00

S5

3.1877E-02

-1.4234E-01

4.0939E-01

-1.7047E+00

5.7437E+00

-1.2314E+01

1.3021E+01

-3.5815E+00

-1.4863E+00

S6

-2.0129E-01

-5.8315E-01

8.0638E+00

-5.0479E+01

1.7747E+02

-3.7529E+02

4.7485E+02

-3.3194E+02

9.8882E+01

S7

-6.6173E-01

2.0123E+00

-8.6004E+00

2.7428E+01

-6.0720E+01

8.9579E+01

-8.1997E+01

4.1974E+01

-9.2486E+00

S8

-2.0637E-01

-6.6610E-01

5.3916E+00

-1.6912E+01

3.1022E+01

-3.5515E+01

2.5092E+01

-1.0044E+01

1.7491E+00

S9

1.4358E-02

-7.9141E-01

3.5533E+00

-8.1508E+00

1.1441E+01

-1.0276E+01

5.8001E+00

-1.8846E+00

2.6943E-01

S10

-4.2107E-02

-9.0947E-02

1.0825E+00

-3.1260E+00

5.1228E+00

-5.1141E+00

3.0738E+00

-1.0208E+00

1.4378E-01

S12

-3.4993E-01

4.4720E-01

-4.5286E-01

3.1864E-01

-1.5381E-01

4.9207E-02

-9.8696E-03

1.1185E-03

-5.4491E-05

Watch 34

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S11

-5.9425E-01

4.4307E-01

-2.7329E-01

6.5512E-02

4.4294E-02

7.4561E-03

-6.4781E-03

-6.3500E-03

Watch 35

Table 36 shows the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in example 9.

Watch 36

Fig. 18 shows the size of the RMS spot diameter of the imaging lens group of embodiment 9 at different image height positions in the first quadrant. As can be seen from fig. 18, the imaging lens group according to embodiment 9 can achieve good imaging quality.

Example 10

A photographing lens group according to embodiment 10 of the present application is described below with reference to fig. 19 and 20. Fig. 19 shows a schematic configuration diagram of a photographing lens group according to embodiment 10 of the present application.

As shown in fig. 19, the image capturing lens assembly according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Table 37 shows the surface type, radius of curvature X, radius of curvature Y, thickness, material, conic coefficient X, and conic coefficient Y of each lens of the imaging lens group of example 10, wherein the units of radius of curvature X, radius of curvature Y, and thickness are millimeters (mm).

Watch 37

As can be seen from table 37, in example 10, the object-side surface and the image-side surface of any one of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, and the fifth lens E5, and the object-side surface S11 of the sixth lens E6 are aspheric; the image-side surface S12 of the sixth lens element E6 is an aspherical surface having a non-rotational symmetry.

Table 38 shows high-order term coefficients that can be used for each aspherical mirror surface in embodiment 10, wherein each aspherical mirror surface type can be defined by the formula (1) given in embodiment 1 above. Table 39 shows the rotationally symmetric component that can be used for the rotationally asymmetric aspheric surface S12 in embodiment 10 and the higher-order coefficients of the rotationally asymmetric component, in which the rotationally asymmetric aspheric surface shape can be defined by the formula (2) given in embodiment 1 above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

1.8642E-01

1.2050E-01

-5.8585E-01

8.4265E-01

-6.2964E-01

2.4596E-01

-3.9459E-02

0.0000E+00

S2

1.1925E+00

-2.1150E+00

-1.1149E+00

2.6898E+01

-8.8399E+01

1.2859E+02

-7.1067E+01

0.0000E+00

S3

4.4739E-01

-3.3104E+00

1.2674E+01

-3.3649E+01

5.7762E+01

-5.0256E+01

1.2154E+01

0.0000E+00

S4

-2.3718E-02

1.0569E+00

-2.3231E+01

2.3371E+02

-1.2124E+03

3.3408E+03

-3.8118E+03

0.0000E+00

S5

-1.5373E-01

6.9344E+00

-1.4772E+02

1.8930E+03

-1.4926E+04

7.2469E+04

-2.1001E+05

3.3239E+05

-2.2082E+05

S6

-9.5053E-01

6.6194E+00

-9.2334E+01

9.0511E+02

-5.2232E+03

1.7980E+04

-3.6486E+04

4.0381E+04

-1.8868E+04

S7

-8.5963E-01

3.0615E+00

-7.7699E+01

7.1880E+02

-3.1120E+03

6.8068E+03

-6.4124E+03

-2.3968E+02

3.0986E+03

S8

1.5694E-01

-3.8376E+00

-3.8171E-01

1.2044E+02

-5.4439E+02

1.0569E+03

-8.9333E+02

1.1139E+02

1.8185E+02

S9

-1.1890E-01

3.9780E+00

-3.6192E+01

1.6193E+02

-4.0698E+02

6.0366E+02

-5.2142E+02

2.3876E+02

-4.2929E+01

S10

-2.9065E-01

-6.7487E-01

1.2924E+01

-5.5742E+01

1.2459E+02

-1.6323E+02

1.2683E+02

-5.4117E+01

9.7558E+00

S11

-1.1758E+00

5.3531E+00

-1.5148E+01

2.6035E+01

-2.8474E+01

2.0002E+01

-8.7644E+00

2.1837E+00

-2.3624E-01

Watch 38

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S12

-1.1924E-01

5.3953E-02

-1.3861E-02

9.0140E-04

-9.8030E-02

-7.2347E-02

-5.7360E-02

-6.3441E-02

Watch 39

Table 40 shows the effective focal lengths f1 to f6 of the respective lenses, the effective focal length fx of the image pickup lens group in the X-axis direction, the effective focal length fy of the image pickup lens group in the Y-axis direction, the total optical length TTL of the image pickup lens group, half ImgH of the diagonal length of the effective pixel area on the imaging plane S15, and the maximum half field angle semi-FOV in example 10.

f1(mm)	-5.55	fx(mm)	1.51
				f2(mm)	16.73	fy(mm)	1.91
f3(mm)	3.31	TTL(mm)	4.44
				f4(mm)	40.00	ImgH(mm)	2.30
f5(mm)	2.42	semi-FOV(°)	51.6
				f6(mm)	-3.99

Watch 40

Fig. 20 shows the size of the RMS spot diameter of the imaging lens group of embodiment 10 at different image height positions in the first quadrant. As can be seen from fig. 20, the imaging lens group according to embodiment 10 can achieve good imaging quality.

In summary, examples 1 to 10 each satisfy the relationship shown in table 41.

Table 41

The present application also provides an image pickup apparatus, wherein the electronic photosensitive element may be a photosensitive coupling element (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). The camera device may be a stand-alone camera device such as a digital camera, or may be a camera module integrated on a mobile electronic device such as a mobile phone. The image pickup device is equipped with the image pickup lens group described above.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having a negative optical power;

a second lens having an optical power;

a third lens having a positive optical power;

a fourth lens having an optical power;

a fifth lens having optical power; and

a sixth lens having an optical power,

at least one of the first lens to the sixth lens has a non-rotationally symmetric aspherical surface;

the maximum field angle FOV of the image pickup lens group satisfies FOV > 100 DEG, an

An on-axis distance SAG12 from an intersection point of the image-side surface of the first lens and the optical axis to a maximum effective semi-aperture vertex of the image-side surface of the first lens and an on-axis distance SAG21 from an intersection point of the object-side surface of the second lens and the optical axis to a maximum effective semi-aperture vertex of the object-side surface of the second lens satisfy 0 < SAG12/SAG21 < 2.0.

2. The image capturing lens group according to claim 1, wherein a center thickness CT3 of the third lens on the optical axis and an edge thickness ET3 of the third lens satisfy 1.5 < CT3/ET3 < 3.0.

3. The image capturing lens group of claim 1, wherein the fifth lens element has a positive optical power; and

the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens satisfy 1.0 < f3/f5 < 1.5.

4. The image capturing lens group according to claim 1, wherein a radius of curvature R5 of the object side surface of the third lens and a radius of curvature R3 of the object side surface of the second lens satisfy 1.0 < R5/R3 < 2.5.

5. The image capturing lens group according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy 1.5 < CT5/ET5 < 3.0.

6. The image capturing lens group according to claim 1, wherein a radius of curvature R1 of the object side surface of the first lens and a radius of curvature R10 of the image side surface of the fifth lens satisfy 2.0 < R1/R10 < 3.0.

7. The image capturing lens group of claim 1, wherein a radius of curvature R11 of the object side surface of the sixth lens element and a radius of curvature R12 of the image side surface of the sixth lens element satisfy 1.5 < R11/R12 < 3.0.

8. The image capturing lens group according to claim 1, wherein a separation distance T12 on the optical axis between the first lens and the second lens, a separation distance T23 on the optical axis between the second lens and the third lens, and a separation distance T34 on the optical axis between the third lens and the fourth lens satisfy 2.0 < (T12+ T23)/T34 < 4.0.

9. The image capturing lens group according to claim 1, wherein an effective focal length fx of the image capturing lens group in the X-axis direction and an effective focal length fy of the image capturing lens group in the Y-axis direction satisfy 0.5 < fx/fy < 1.5.

10. The image capturing lens group according to any one of claims 1 to 9, wherein an effective focal length f1 of the first lens and an effective focal length fx of the image capturing lens group in the X-axis direction satisfy-4.0 < f1/fx ≦ -1.5.